In heavy rain a driver doubles the dry two-second gap. What gap in metres should be left to the car ahead at 54 km/h?

Answer and explanation

Correct answer: D. 60 m

  1. Step 1: The doubled gap is 4 seconds, and at 54 km/h the car covers 15 m per second. Step 2. 4 x 15 = 60 m. Answer: 60 m. Why not the others: 30 m: 30 m is the normal dry two-second gap. 15 m: 15 m is only one second of travel. 36 m: 36 m divides by 6 instead of converting with 3.6.

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